GM6250 combines high accuracy with very low
power consumption, and provides high output
current even when the application requires
extremely low input-output voltage dropout.
GM6250 includes a precision voltage reference,
an error correction circuit, over-temperature
protection, and a current limited output driver.
Fast transient response to load variations
provides excellent stability under dynamic loads.
GM6250 comes in SOT-23 (150mW), and SOT-89
(500mW).
Application
Palmtops
300mA ULTRA LOW DROPOUT
POSITIVE VOLTAGE REGULATOR
Features
Maximum output current up 300mA
Output voltage from 1.5V to 5.0V in
0.1V increments
Output voltage accuracy : ±2%
CMOS low power consumption,
typically
Input stability: typically 0.2%/V
Ultra low dropout voltage: 0.38V @ I
= 200mV at V
SOT-23 (150mW), SOT-89 (500mW) and
TO-92 packages
Battery Powered Equipment
1.0µA at V
= 5.0V
OUT
OUT
= 5.0V
OUT
Portable Cameras
Video Recorders
Typical Application Circuits
VIN
C
IN
1µF
(Tantalum)
GM6250-x.x
V
IN
V
SS
Reference Voltage Sources
V
OUT
C
OUT
1µF
(Tantalum)
R
L
GM6250V2.00
www.gammamicro.com.tw
1
V
V
V
查询"GM6250-1.5ST23RG"供应商
300mA ULTRA LOW DROPOUT
POSITIVE VOLTAGE REGULATOR
Marking Information and Pin Configurations (Top View)
SOT23 TO92 SOT89
GM6250
EA: Device Code
V: Voltage Code (see next page)
Y: Year (8 = 2008, 9 = 2009 ….)
W: Week Code
IN
2
EAVYW
1
V
SS
3
V
OUT
6250
VV
2
VIN
3
V
OUT
AYWW
1
V
SS
VV: Voltage suffix (18 = 1.8V, 50 = 5.0V…)
A: Assembly Site Code
Y: Year (8 = 2008, 9 = 2009 ….)
WW: Week Code
GM6250
VVAYWW
1
V
SS
2
3
V
IN
V
OUT
Week 1-26 : A – Z
Week 27-52 : A
Week 53 : A
- Z
Marking Information and Pin Configurations – Green Product(Top View)
GM6250-5.0ST23RG Q SOT-233,000 Units/Tape and Reel
4.0V
4.4V
4.5V
5.0V
SOT-891,000 Units/Tape and Reel
SOT-891,000 Units/Tape and Reel
SOT-891,000 Units/Tape and Reel
SOT-891,000 Units/Tape and Reel
GM6250-5.0ST89RG
GM6250
6
SOT-891,000 Units/Tape and Reel
GM6250
查询"GM6250-1.5ST23RG"供应商
300mA ULTRA LOW DROPOUT
POSITIVE VOLTAGE REGULATOR
Absolute Maximum Ratings
PARAMETER SYMBOL RATINGS UNITS
Input Voltage VIN 12 V
Output Current I
Output Voltage V
SOT-23 150
Continuous Total Power
Dissipation
SOT-89 500
TO-92
Operating Ambient Temperature T
Storage Temperature T
Lead Temperature (Soldering, 10 sec) + 260 ℃
500 mA
OUT
V
OUT
P
D
– 0.3 to VIN +0.3 V
SS
mW
300
- 40 to 125 ℃
A
- 65 to 150 ℃
stg
Block Diagram
VIN
V
SS
V
OUT
Current
Limit
Voltage
Reference
GM6250V2.00
7
V
查询"GM6250-1.5ST23RG"供应商
GM6250
300mA ULTRA LOW DROPOUT
POSITIVE VOLTAGE REGULATOR
Electrical Characteristics(T
= 25℃, V
A
IN
= V
+ 1V unless otherwise noted)
OUT
Parameter SymbolCondition MinTyp Max Unit
GM6250-1.5 1.4701.500 1.530
GM6250-2.2 1.7642.200 2.236
GM6250-2.5 2.4502.500 2.550
GM6250-2.7 2.6462.700 2.754
GM6250-2.8 2,7442.800 2.856
GM6250-3.0 2.9403.000 3.060
Output Voltage
Line Regulation
Load Regulation
Dropout
Voltage
Current Consumption IQ 1.0 2.9 µA
GM6250-3.2 3.1363.200 3.264
V
GM6250-3.3 3.2343.300 3.366
GM6250-3.5 3.4303.500 3.570
GM6250-3.6 3.5283.600 3.672
GM6250-4.0 3.9204.000 4.080
GM6250-4.4 4.3124.400 4.488
GM6250-4.5 4.4104.500 4.590
GM6250-5.0
V
> 2.7V 0.4 0.7
OUT
2.0V < V
V
OUT
OUT
<2.0V
< 2.7V
OUT
∆V
OI
∆V
1mA < I
OL
∆V
= 40mA, VIN = V
I
OUT
I
OUT
+ 1V < VIN < 10V
V
OUT
I
OUT
= 40mA,
< 80mA
OUT
= 160mA
OUT
+ 1V
V
4.900 5.000 5.100
0.2 0.3 %/V
0.02 0.03 %/mA
0.55 0.85
0.9 1.3
V
Output Current Limit ICL 500 mA
Power Supply Rejection Ration PSRR 10kHz 10 dB
2.00
GM6250
8
GM6250
查询"GM6250-1.5ST23RG"供应商
Application Note
Notes on Usage
1. It is recommended to operate the GM6250 series within the stipulated absolute maximum ratings
as the IC is liable to malfunction it is operated outside the ratings.
2. There is a possibility of heat or oscillation as a result of the impedance present between the
power supply and the IC's input. Where impedance is greater 10Ω, it is recommend to use a
capacitor (C
3. With a large output current, operations can be stabilized by increasing capacitor size (C
is too small and capacitance of (CL) is increased, there is a possibility of oscillation due to input
impedance. In such case, operation can be stabilized by either increasing the size of C
decreasing the size of C
4. Please ensure the output current (I
stipulated continuous for total power dissipation value (Pd) for the package.
CALCULATING POWER DISSIPATION
The GM6250 series precision linear regulators include thermal shutdown and current limit circuitry to
protect the devices. However, high power regulators normally operate at high junction temperatures so
it is important to calculate the power dissipation and junction temperatures accurately to be sure that
you use and adequate heat sink.
) of at least 1µF at the input terminal.
IN
.
L
) is less than Pd ÷ (V
OUT
300mA ULTRA LOW DROPOUT
POSITIVE VOLTAGE REGULATOR
). If C
IN
or
IN
- V
IN
) and does not exceed the
OUT
IN
The thermal characteristics of an IC depend four factors:
1. Maximum Ambient Temperature T
2. Power Dissipation P
3. Maximum Junction Temperature T
4. Thermal Resistance Junction to ambient R
These relationship of these four factors is expressed by equation :
Maximum ambient temperature and power dissipation are determined by the design while the
maximum junction temperature and thermal resistance depend on the manufacturer and the package
type.